CORS / Optimization Days
HEC Montréal, May 29-31, 2023
CORS-JOPT2023
HEC Montreal, 29 — 31 May 2023
Plenary : Faster Exact Methods For Large Scale Real-time Logistics Operations -- Implications for both Researchers and Practitioners
May 29, 2023 02:00 PM – 03:00 PM
Location: Banque Nationale
Chaired by Nadia Lehoux
1 Presentation
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02:00 PM - 03:00 PM
Faster Exact Methods For Large Scale Real-time Logistics Operations -- Implications for both Researchers and Practitioners
In this research, we consider the problem of accelerating the convergence of column generation for the weighted set cover formulation of the capacitated vehicle routing problems with time windows (CVRPTW). We adapt two new techniques, Local Area routes and Graph Master to these problems. We show that these methods allow us to solve problems arising in automated warehousing operations in real-time, suggesting that in many applications, resorting to metaheuristics, however powerful, is no longer necessary. This work is a collaboration with Udayan Mandal, Louis-Martin Rousseau and Julian Yarkony.